html, body{
  margin:0;
  padding:0;
  ul{
    list-style: none;
    padding:0;
    margin:0;
    li{
      font-size:12px;
      line-height:30px;
      padding-left:10px;
    }
  }
  .box{
    width:500px;
    height:230px;
    background:url('../image/banner4.jpg');
    background:cover;
  }
}
